Kindly just read this article.
What's the question that article answers?Currently the optical reflection from solar cell surface is accounted for a significant loss in the photoelectric energy conversion process and thus better solar wafers with nearly zero optical reflection across a broad range of incident light wavelengths and angles will help to considerably improve the performance of solar cell devices and potentially bring down the solar electricity cost. The silicon nanostructures created by this unique processing method on solar wafer surface developed in this project will have superior antireflection and light trapping property. In this project the solar industry compatible nanomanufacturing method for zero-reflection ?Omni Black? solar wafers will be developed and the underlying processing physical mechanism will be better understood and controlled.